Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 33, Problem 1AC
Summary Introduction
To describe:
The advantage of four-chambered heart with its two separate pumps.
Introduction:
The heart pumps blood throughout the body and provides transport of oxygen and the other gases. The number of chambers present in the heart defines the three major heart types; two-chambered, three-chambered, and four-chambered heart.
Expert Solution & Answer
Explanation of Solution
The four-chambered heart has evolved from the three-chambered heart of amphibians and the two-chambered heart of fishes. The four-chambered heart contains two pumps (atria and ventricle) and two circulatory systems (pulmonary and systematic system), and have the following advantages over three and two-chambered heart;
Efficiency: The four-chambered heart separates the oxygenated and deoxygenated blood from mixing. Superior chambers receive the blood and pump it to the inferior chambers. The efficiency of the heart is increased by the separation of blood which is received and pumped out from the heart.
Pressure: The four-chambered heart has a double circulatory system which contains blood under high pressure, which allows transportation of nutrients and gases at a rapid rate.
Power: In association with the respiratory and circulatory system, a four-chambered heart provides a rich supply of oxygen and nutrients to the tissues in the body, which is responsible for energy generation in the body.
It also helps in maintaining higher
Conclusion
Efficiency, rapid transportation, and energy generation are the main advantage of the four-chambered heart with two pumps.
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3. Suppose it were the pulmonary semilunar valve that were stenotic. Which of the four chambers of the heart would have its workload increased the most and why?
1. Which phase of Ventricular Filling increases the volume of blood in the ventricles the most?
A.Isovolumetric Relaxation
B.Diastasis
C.Atrial Systole
D.Rapid Filling
2. Which graph would most directly show ventricular ejection?
A.Atrial, Ventricular, and Aortic Pressure
B.The EKG
C.Heart Ausculatation
D.Volume of Blood in the Ventricles
1- The left ventricular wall of the heart is thicker than the right wall in order to . A) accommodate a greater volume of blood B) pump blood through a smaller valve C) expand the thoracic cage during diastole D) pump blood with greater pressure
2- Blood within the pulmonary veins returns to the . A) left atrium B) left ventricle C) right atrium D) right ventricle
3- The condition where fluid compresses the heart and limits its ability to contract is called . A) angina pectoris B) myocardial infarction C) cardiac tamponade D) pericarditis
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Chapter 33 Solutions
Biology: Life on Earth with Physiology (11th Edition)
Ch. 33.1 - explain the major features of all circulatory...Ch. 33.1 - Why doesnt insect hemolymph need hemoglobin?Ch. 33.1 - compare open and closed circulatory systems?Ch. 33.1 - describe the functions of the vertebrate...Ch. 33.2 - Prob. 1CSCCh. 33.2 - describe the three types of vertebrate hearts and...Ch. 33.2 - Prob. 1HYEWCh. 33.2 - Prob. 1TCCh. 33.2 - Prob. 2CYLCh. 33.2 - Prob. 3CYL
Ch. 33.3 - describe each component of blood and explain its...Ch. 33.3 - Prob. 1TCCh. 33.3 - Prob. 2CYLCh. 33.3 - Prob. 2TCCh. 33.3 - explain the sequence of events during blood...Ch. 33.4 - Prob. 1CYLCh. 33.4 - Prob. 1ETCh. 33.4 - Prob. 1TCCh. 33.4 - Prob. 2CYLCh. 33.4 - Prob. 3CYLCh. 33.5 - Prob. 1CSCCh. 33.5 - Prob. 1CSRCh. 33.5 - Prob. 1CYLCh. 33.5 - Prob. 1TCCh. 33.5 - Prob. 2CYLCh. 33.5 - Prob. 3CYLCh. 33 - Prob. 1ACCh. 33 - Prob. 1FIBCh. 33 - Prob. 1MCCh. 33 - List the major structures of all circulatory...Ch. 33 - Prob. 2ACCh. 33 - Prob. 2FIBCh. 33 - Which of the following is True? a. Arteriole...Ch. 33 - Describe and compare the features of open and...Ch. 33 - The hearts pacemaker is called the (complete term)...Ch. 33 - Prob. 3MCCh. 33 - Explain how two- and three-chambered vertebrate...Ch. 33 - Prob. 4FIBCh. 33 - Prob. 4MCCh. 33 - Prob. 4RQCh. 33 - Prob. 5FIBCh. 33 - Which of the following is true of blood pressure?...Ch. 33 - Prob. 5RQCh. 33 - Prob. 6FIBCh. 33 - Prob. 6RQCh. 33 - Lymph is ___________ that has entered lymphatic...Ch. 33 - Prob. 7RQCh. 33 - Prob. 8RQCh. 33 - Describe the cardiac cycle, and relate the...Ch. 33 - Prob. 10RQCh. 33 - Prob. 11RQCh. 33 - Prob. 12RQCh. 33 - In what way do veins and lymphatic vessels...
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